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Branches on the Tree of Life: The Biology of Protists

20 minutes 4 seconds

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Microscopic view of a transparent tube-shaped organism. Caption: an energy reserve the cell can draw on

Part of the "Branches on the Tree of Life" series. The term "protist" covers a wide range of microscopic organisms formerly clumped into "Kingdom Protista." New molecular analyses show that the protistan lines of evolution go so far back in time they can be considered as different kingdoms of life. Through photography of living protists, amoebas, flagellates, algae, and the elegant ciliated protists are introduced in ten learning modules. Accessibility options on the DVD are: (1) expanded description, (2) English subtitles in a black box, (3) subtitled description.